Police have been granted three more days to grill Bangladesh Chhatra League leader Khandaker Tabakhkharul Islam Tanvir over the murder of slain BUET student Abrar Fahad.

Earlier on Oct 8, Tanvir was placed on a five-day remand before being sent back to prison at the end of the first round of questioning on Oct 13.

Abrar, a second-year electrical engineering student, was beaten to death at the university's Sher-e-Bangla Hall by Chhatra League activists on Oct 6 allegedly over a Facebook post in which he was critical of a recent deal between Bangladesh and India.

His father Barkatullah subsequently started a case against 19 people with Chawkbazar police.